lily/staff-regs.cc

   1 /*
   2   staff-regs.cc -- implement Staff_registers
   3
   4   source file of the LilyPond music typesetter
   5
   6   (c) 1997 Han-Wen Nienhuys <hanwen@stack.nl>
   7 */
   8 #include "staff-sym.hh"
   9 #include "voice-group-regs.hh"
  10 #include "voice-regs.hh"
  11 #include "staff-regs.hh"
  12 #include "command-request.hh"
  13 #include "bar.hh"
  14 #include "debug.hh"
  15 #include "input-register.hh"
  16
  17 Staff_info
  18 Staff_registers::get_staff_info() return inf;
  19 {
  20     inf = Request_register::get_staff_info();
  21     inf.staff_sym_l_=staff_sym_l_;
  22     inf.c0_position_i_l_ = &c0_position_i_;
  23 }
  24
  25 Staff_registers::Staff_registers(Input_register const*ireg_C)
  26 {
  27     staff_sym_l_ =0;
  28     c0_position_i_ = 0;
  29     base_position_i_ =0;
  30     add( ireg_C->get_nongroup_p_arr());
  31     ireg_C_ =ireg_C;
  32 }
  33
  34 /** Magic function which takes a Voice_registers out of one of its own
  35   children, and puts it in another. This also handles the push and
  36   popgroup feature.  */
  37 void
  38 Staff_registers::change_group(Group_change_req * greq_l,
  39                                Voice_registers *voice_regs_l,
  40                                Voice_group_registers * old_group)
  41 {
  42
  43     Voice_registers *regs_p = (old_group)
  44         ? (Voice_registers*) old_group->get_register_p(
  45             voice_regs_l)
  46         : new Voice_registers(
  47             greq_l->voice_l(), ireg_C_->get_ireg_l("Voice_group_registers")
  48             ->get_ireg_l("Voice_registers"));
  49
  50     String new_str = greq_l->newgroup_str_;
  51     String old_str;
  52     if (old_group)
  53          old_str = old_group->group_id_str_;
  54     if ( new_str[0] == '+') {
  55         new_str = old_str + new_str;
  56     } else if (new_str[0] == '-') {
  57         int idx = old_str.index_last_i('+');
  58         if (idx >=0)
  59             new_str = old_str.left_str ( idx );
  60     }
  61     Voice_group_registers * new_group_l = get_group(new_str);
  62     new_group_l->add(regs_p);
  63
  64     mtor << "processed change_group " << get_staff_info().when()<<"\n";
  65     print();
  66 }
  67
  68 Voice_group_registers *
  69 Staff_registers::get_group(String id)
  70 {
  71     for (int i=0; i < group_l_arr_.size(); i++) {
  72         if (group_l_arr_[i]->group_id_str_ == id)
  73             return group_l_arr_[i];
  74     }
  75     Voice_group_registers *group_p =
  76         new Voice_group_registers(id, ireg_C_->get_ireg_l("Voice_group_registers"));
  77     group_l_arr_.push(group_p);
  78     add(group_p);
  79     return group_p;
  80 }
  81
  82
  83 void
  84 Staff_registers::terminate_register(Request_register * reg)
  85 {
  86     for (int i=0; i < group_l_arr_.size(); i++) {
  87         if (group_l_arr_[i] == reg) {
  88             group_l_arr_.del(i);
  89             Register_group_register::terminate_register(reg);
  90             return;
  91         }
  92     }
  93     assert(false);
  94 }
  95
  96 bool
  97 Staff_registers::try_request(Request * r)
  98 {
  99     bool b = Register_group_register::try_request(r);
 100     if (!b) {
 101         Command_req * cr_l = r->command() ;
 102
 103         if (cr_l && cr_l->groupchange()) {
 104             change_group(cr_l->groupchange(), 0, 0);
 105             b = true;
 106         } else
 107             b= false;
 108     }
 109     return b;
 110 }
 111
 112 IMPLEMENT_STATIC_NAME(Staff_registers);
 113
 114 bool
 115 Staff_registers::acceptable_request_b(Request*r)const
 116 {
 117     return Register_group_register::acceptable_request_b(r) ||
 118         (r->command() && r->command()->groupchange());
 119 }
 120
 121 void
 122 Staff_registers::acknowledge_element(Staff_elem_info i)
 123 {
 124     Register_group_register::acknowledge_element(i);
 125     if ( i.elem_l_->name() == Staff_symbol::static_name())
 126         staff_sym_l_ = (Staff_symbol*)i.elem_l_;
 127 }